Furnace-door for brick-kilns.



S. E. ISGETT. FURNACE DOORFOR BRICK KILNS. APPLICATION men ocr. 1 1. m7.

1,269,459., I Patentedlu'ne 11,1918.

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Y L-LJ ll it *startsein all whom t may ooncermzb 1j-Be itnknown *thaty I, STPHEN f E. Isonr'r, a l citizen r off the `United States,` residing f at Grilbert,-in the county of Franklin-and State of Louisiana, have. invented a new and useful' Furnace-Door for Brick-Kilns, of which the following is a specification."` y .l l

The subject of this invention is 'a furnace door intended for use,";principally` with brick kilns, and like structures.

"Themain object of theinvention is the f production of a door which will eectlfam saving in the consumption of fuel.

Another object of the invention is to provide a sight slide for the door.

A further object is to provide means for feeding gas or oil to the furnace.

Still another object is to provide a simple, durable and eiicient furnace door.

With the foregoing and other objects in view which will appear as the description proceeds the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is shown inl the accompanying drawing, wherein Figure 1 is a front elevation of the door shown applied to a kiln;

Fig. 2 is a rear elevation of the door;

Fig. 3 is a section on the line 3-3 of Fig. 2;

Fig. 4 is a perspective viewof the supporting or hanging lug;

Referring to the drawing by numerals of reference:-

A portion of the kiln is indicated at 1 and anchored in the wall of the kiln are the brackets or hangers consisting of an arm 2 provided with an angled end to contact the inner face of the kiln, and with a cross bar 3 the down turned ends of which are adapted to take over the ends of, a brick in the kiln wall.

The door consists of a casing 4 formed with rearwardly extending side anges 5 and upper and lower {ianges 6. The upper and lower flanges are extended beyond the sides to provide lugs.

The lugs 7 extending beyond the front "gf, Fortunes-noonronnnrci-KILNS;

p `Slieeiillcat'ionci.' Letters Patent.

Application led October 11, 191'?. Serial 1`\To.` 196,063.

.Patented dunne 1918.

edge of the door at the upper and lower corners are aperturedi toereceive a bolt'8 which is spaced from the front edgeof the door and serves tostrengthen the structure. A hook 9 is bound bythe bolti 8 upon1 the `upper lugf?, or it may beintegral with` he lug, toforma grapple for opening the;`

oor. ,l

`The lugs 10 at the upper `and lower corners of the rear edge of the door are also apertu-red to receive a bolt 11,which binds ytheparts in place and spaced from such apertures are other apertures which aline with the apertures in the arms 2 and receive a pin 12 by which the door is hinged to the brackets.

Guides 13 are secured to the front of the casing 4, toward the upper edges thereof, and within these guides a slide 14 is mounted for reciprocation. The slide 14 is provided with an out turned end 14 by which the slide may be reciprocated back and forth, and also with spaced apertures 15 which are f adapted to aline with apertures 16, formed in the casing, when the slide is in one position.

Guides 17 extend from the front face of the casing toward the lower edge thereof, and a slide 18 reciprocates within these guides. The slide 18 has an angled end 18 by which the slide may be reciprocated and is provided with apertures 19 which are adapted to aline, when the slide is in one position, with apertures 20 formed in the casing 4.

A slot 21 is provided in the slide 18 and extends longitudinally thereof through a portion of the length of the slide.

This slot permits exposure of an aperture 22, formed in the casing 4, at all positions of the slide 18.

The aperture 22 is provided to permit insertion of a gas or oil burning nozzle.

The back of the door is formed of fire bricks 23 which are embraced by the rear- 100 wardly extending flanges 5 and 6. The bricks are provided with apertures 24 which aline with the apertures 16, 2() and 22 of the casing.

A sheet of asbestos 25, or other heat in- 105 sulating material, may be interposed between the bricks 23 and the casing so as to protect the casing from undue heating.

As will be seen, the sight slide 14 may be reciprocated to allow inspection of the in- 110 terior without opening the door. This not what is claimed as new and sought by Let- 20 only protects the attendant from the intense heat and glare of the fire, but also protects the arch from injury due to the udden change in temperature and saves uel.

The slide 18 provides draft for the furnace and the slide 14 may also be used as an adjunct thereto for draft purposes, when desired.

The aperture 22 maybe plugged in any suitable manner when gas or oil is not being used.

It has been found that the friction between the brackets and the lugs 10 is sufficient to hold this door in its closed position; consequently a latch for the door has not been provided or shown.

Having thus described the invention,

Copies of this patent may be obtained for ters Patent, is

The combination with an apertured kiln wall, including brackets anchored therein, of a door swung from the brackets, said door comprising a casing provided with sight apertures and draft openings, means secured to the casing for closing the sight openings, means secured to the casing for regulating the draft openings, and fire brick secured to the back of the casing.

In testimony that lI claim the foregoing as my own, I have' hereto affixed my signature in the presence of two witnesses.

STEPHENE. IsGETT.

Witnesses: p A

J. S. GILBERT, C. W. BERRY.

ve cents each, by addressing the Commissioner of Patents, Washington, I). C. i 

